IRGP4760-EPBF Equivalent & Substitute Parts

Part Overview

The IRGP4760-EPBF is a 650V IGBT manufactured by Infineon Technologies, rated for 90A collector current with a maximum power dissipation of 325W in a Through Hole TO-247AD package. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal operating ranges while conforming to the same package footprint and mounting requirements.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Voltage - Collector Emitter Breakdown (Max)	650	V	Critical - must match or exceed
Current - Collector (Ic) (Max)	90	A	Critical - substitute must support equal or greater rating
Current - Collector Pulsed (Icm)	144	A	Important - defines transient current capability
Power - Max	325	W	Critical - thermal design parameter
Vce(on) (Max) @ Vge, Ic	2V @ 15V, 48A	V	Important - affects conduction losses and heat generation
Mounting Type	Through Hole	-	Critical - determines PCB compatibility
Package / Case	TO-247-3	-	Critical - physical and electrical footprint
Operating Temperature Range	-40°C ~ 175°C (TJ)	°C	Important - defines thermal operating window

Substitute Part Grouping Explanation

Substitute parts for the IRGP4760-EPBF are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Voltage Rating: Substitute parts must have a Collector-Emitter breakdown voltage (BVCES) equal to or greater than 650V to ensure safe operation across the full voltage range of the original design.

Current Rating: The maximum collector current (Ic) of substitute parts must equal or exceed 90A. This ensures the substitute can handle the same or greater load current without exceeding thermal or electrical limits.

Pulsed Current: The pulsed collector current (Icm) rating provides margin for transient conditions. Substitutes with equal or higher Icm ratings maintain design safety margins.

Power Dissipation: Maximum power rating must be equal to or greater than 325W to accommodate thermal design requirements and prevent thermal runaway.

Package and Mounting: Substitute parts must use Through Hole mounting in TO-247-3 package configuration to ensure direct PCB compatibility without redesign.

Operating Temperature: Substitute parts must support the full operating temperature range of -40°C to 175°C (junction temperature) to maintain performance across all environmental conditions.

Input Type: Standard input type configuration ensures gate drive compatibility with existing control circuitry.

Parameter Comparison

Parameter	IRGP4760-EPBF (Main Part)	AOK50B65M2 (Substitute)	Compatibility Assessment
Manufacturer	Infineon Technologies	Alpha & Omega Semiconductor Inc.	Different manufacturer, same category
Voltage - Collector Emitter Breakdown (Max)	650 V	650 V	Equivalent
Current - Collector (Ic) (Max)	90 A	100 A	Substitute exceeds requirement
Current - Collector Pulsed (Icm)	144 A	150 A	Substitute exceeds requirement
Power - Max	325 W	500 W	Substitute exceeds requirement
Vce(on) (Max) @ Vge, Ic	2V @ 15V, 48A	2.2V @ 15V, 50A	Slightly higher, within acceptable range
Gate Charge	145 nC	102 nC	Substitute lower, improves switching performance
Td (on/off) @ 25°C	70ns/140ns	46ns/182ns	Turn-on faster, turn-off slower
Operating Temperature Range	-40°C ~ 175°C (TJ)	-55°C ~ 175°C (TJ)	Substitute supports extended low-temperature range
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	TO-247-3	TO-247-3	Equivalent
Product Status	Obsolete	Active	Substitute actively manufactured and supported
RoHS Status	Not specified	ROHS3 Compliant	Substitute meets modern environmental standards

Engineering Selection Recommendations

Product Status Consideration: The IRGP4760-EPBF is classified as obsolete, indicating discontinued manufacturing and limited long-term availability. The AOK50B65M2 substitute is actively manufactured by Alpha & Omega Semiconductor Inc., ensuring ongoing supply chain access and technical support.

Compliance and Certification: The AOK50B65M2 carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for new designs and procurement. The main part does not specify RoHS status. Both parts are REACH Unaffected and carry EAR99 ECCN classification.

Electrical Performance: The AOK50B65M2 meets or exceeds all critical electrical parameters. The 650V voltage rating matches exactly. The 100A collector current rating exceeds the 90A requirement, providing design margin. The 500W power rating significantly exceeds the 325W specification, allowing for improved thermal performance and reduced junction temperature in equivalent operating conditions.

Thermal Characteristics: The substitute part supports an extended operating temperature range (-55°C to 175°C junction temperature) compared to the main part (-40°C to 175°C), providing additional margin for low-temperature applications.

Switching Characteristics: The AOK50B65M2 exhibits lower gate charge (102nC vs. 145nC), resulting in faster turn-on switching (46ns vs. 70ns). Turn-off time is slightly longer (182ns vs. 140ns). These differences are within acceptable ranges for most applications and may improve overall system efficiency due to reduced switching losses during turn-on.

Package Compatibility: Both parts use identical TO-247-3 Through Hole packaging, ensuring direct PCB compatibility without layout modifications or redesign.

Frequently Asked Questions (FAQ)

Q: Can the AOK50B65M2 directly replace the IRGP4760-EPBF without PCB modifications?

A: Yes. Both parts use identical TO-247-3 Through Hole packaging with the same pin configuration and footprint. Direct substitution on the PCB is possible without layout changes.

Q: What is the significance of the higher current rating (100A vs. 90A) on the substitute part?

A: The higher current rating provides design margin and thermal headroom. In applications operating at or near the 90A design point, the substitute part will operate at lower junction temperature, extending component life and improving reliability.

Q: How do the switching characteristics differ between these parts?

A: The AOK50B65M2 has lower gate charge (102nC vs. 145nC) and faster turn-on time (46ns vs. 70ns), which reduces switching losses during the turn-on transition. Turn-off time is slightly longer (182ns vs. 140ns). These differences are typically negligible in most applications and may result in improved overall efficiency.

Q: Is the slightly higher Vce(on) voltage (2.2V vs. 2V) a concern?

A: The difference of 0.2V is measured at different test conditions (50A vs. 48A). At equivalent operating points, the difference is minimal and within normal manufacturing tolerance ranges. This results in slightly higher conduction losses, which is offset by the improved thermal rating and lower switching losses.

Q: Why is the AOK50B65M2 preferred over the obsolete IRGP4760-EPBF?

A: The substitute part is actively manufactured, ensuring long-term availability and supply chain continuity. It carries ROHS3 compliance certification, meets modern environmental standards, and provides superior thermal performance with a higher power rating and extended operating temperature range.

Q: Are there any gate drive circuit modifications required?

A: No. Both parts use standard input type gate drive configuration. The lower gate charge of the substitute part may allow for slightly faster gate drive circuits, but existing gate drive designs will function correctly without modification.

Q: What is the moisture sensitivity level for both parts?

A: Both the IRGP4760-EPBF and AOK50B65M2 have MSL 1 (Unlimited) rating, indicating no moisture sensitivity concerns. Standard handling and storage procedures apply.

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